IEEE C802.20-03/77 ProjectIEEE 802 Executive Committee Study Group on Mobile Broadband Wireless Access TitleSummary of delay profiles.

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IEEE C /77 ProjectIEEE 802 Executive Committee Study Group on Mobile Broadband Wireless Access TitleSummary of delay profiles for MBWA Date Submitted Source(s)Jin Weon ChangVoice: Fax: DS (Dong Seek) ParkVoice: Fax: Joseph R. ClevelandVoice: Fax: Re: WG Call for Contributions AbstractThis document provides summary of delay profiles that major international standard organizations suggested. PurposeContribute to the discussion and development of the Requirements and Channel Model. NoticeThis document has been prepared to assist the IEEE Working Group. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. ReleaseThe contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEEs name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEEs sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802 MBWA ECSG. Patent PolicyThe contributor is familiar with IEEE patent policy, as outlined in Section 6.3 of the IEEE-SA Standards Board Operations Manual and in Understanding Patent Issues During IEEE Standards Development.Section 6.3 of the IEEE-SA Standards Board Operations Manualhttp://standards.ieee.org/guides/opman/sect6.html#6.3http://standards.ieee.org/board/pat/guide.html

2/18 Summary of Delay Profiles for MBWA Jin W. Chang

3/18 Contents Rationale Summary of standard delay profiles –Delay profiles by ITU –Delay profiles by COST 259 –Delay profiles by 3GPP –Delay profiles by 3GPP2 Another delay profile reported Concluding remarks Recommendations

4/18 Rationale The intention of this contribution is to help discussions on delay spread in IEEE MBWA. Delay profile is very important since it can have major impact on the system performance. Agreement needed on specific model set for evaluation criteria

5/18 Delay Profiles by ITU [1] -i Parameters for channel impulse response model –Channel A: low delay spread case –Channel B: median delay spread case

6/18 Delay Profiles by ITU [1] -ii Indoor office environment

7/18 Delay Profiles by ITU [1] -iii Outdoor to indoor and pedestrian environment

8/18 Delay Profiles by ITU [1] -iv Vehicular environment

9/18 Delay profiles by COST 259 [2] -i (TU, Typical Urban)

10/18 Delay profiles by COST 259 [2] -ii (RA, Rural Area)

11/18 Delay profiles by COST 259 [2] -iii (HT, Hilly Terrain)

12/18 Delay profiles by 3GPP [3] -i - All taps have classical Doppler spectrum.

13/18 Delay profiles by 3GPP [3] -ii - All taps have classical Doppler spectrum.

14/18 Delay profiles by 3GPP2 [4] -i

15/18 Delay profiles by 3GPP2 [4] -ii - FURP: Fractional UnRecovered Power shall contribute to the interference of the finger demodulator outputs as an independent fader.

16/18 Another delay profile reported Rappaport, T.S.; Seidel, S.Y.; Singh, R., 900 MHz multipath propagation measurements for US digital cellular radiotelephone, Global Telecommunications Conference, 1989, and Exhibition. 'Communications Technology for the 1990s and Beyond'. GLOBECOM '89., IEEE, Nov. 1989, Page(s): vol.1 Worst profile case for typical operating locations RMS delay spread –Urban: 2-3 us –Hilly: 5-7 us

17/18 Concluding Remarks Delay spread is less than 10 us for most cases. But there are certainly cases where the maximum delay spread is longer than 10 us in both ITU and European COST models: –ITU model vehicular channel B, –COST 259 HT, –3GPP model Cases 2 and 7.

18/18 Recommendations Explicit requirement for delay spread? Performance evaluation –Having multi-delay profiles is reasonable for exact performance evaluation –One profile needs to include taps having delay larger than 10 microseconds. What performance does MBWA have with large delay spreads? ITU-R M.1225 –Although large delay spreads occur relatively infrequently, they can have a major impact on system performance. –To accurately evaluate the relative performance of candidate RTTs, it is desirable to model the variability of delay spread as well as the worst case locations where delay spread is relatively large.

19/18 References 1.RECOMMENDATION ITU-R M.1225, GUIDELINES FOR EVALUATION OF RADIO TRANSMISSION TECHNOLOGIES FOR IMT-2000, GPP TR , Deployment aspects, June GPP TS , "UE Radio Transmission and Reception (FDD), December GPP2 TSG-C.R1002, 1xEV-DV Evaluation Methodology (V13.1).